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[PWGUD] modify mc producer & dihadron codes #17295

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f0e4c8d
add POI
miedema-11 Jul 27, 2026
a2d31fa
add zdc time cut
miedema-11 Jul 30, 2026
b682e0f
add ptdiff
miedema-11 Jul 31, 2026
db57fce
updated version for mc
miedema-11 Aug 2, 2026
365ada8
add event slection switch
miedema-11 Aug 3, 2026
ca0ba15
Merge branch 'master' into master
miedema-11 Aug 4, 2026
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93 changes: 62 additions & 31 deletions PWGUD/Tasks/flowCorrelationsUpc.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@ using namespace o2::framework::expressions;
using namespace o2::constants::math;

// define the filtered collisions and tracks
#define O2_DEFINE_CONFIGURABLE(NAME, TYPE, DEFAULT, HELP) Configurable<TYPE> NAME{#NAME, DEFAULT, HELP};
#define O2_DEFINE_CONFIGURABLE(NAME, TYPE, DEFAULT, HELP) Configurable<TYPE> NAME{#NAME, (DEFAULT), (HELP)}; // NOLINT(bugprone-macro-parentheses)

struct FlowCorrelationsUpc {
O2_DEFINE_CONFIGURABLE(cfgZVtxCut, float, 10.0f, "Accepted z-vertex range")
Expand Down Expand Up @@ -93,6 +93,10 @@ struct FlowCorrelationsUpc {
O2_DEFINE_CONFIGURABLE(cfgIRMaxCut, double, 50, "maximum interaction rate for UPC events")
O2_DEFINE_CONFIGURABLE(cfgZdcTime, bool, false, "choose zdc time cut")
O2_DEFINE_CONFIGURABLE(cfgZdcTimeCut, float, 2.0, "zdc time cut")
O2_DEFINE_CONFIGURABLE(cfgSbp, bool, true, "choose sbp")
O2_DEFINE_CONFIGURABLE(cfgvtxITSTPC, bool, true, "choose vtxITSTPC")
O2_DEFINE_CONFIGURABLE(cfgItsROFb, bool, true, "choose itsROFb")
O2_DEFINE_CONFIGURABLE(cfgTfb, bool, true, "choose tfb")

ConfigurableAxis axisVertex{"axisVertex", {10, -10, 10}, "vertex axis for histograms"};
ConfigurableAxis axisEta{"axisEta", {40, -1., 1.}, "eta axis for histograms"};
Expand All @@ -118,7 +122,7 @@ struct FlowCorrelationsUpc {

// make the filters and cuts.
Filter trackFilter = (aod::udtrack::isPVContributor == true);
Filter collisionFilter = (cfgGapSideMerge == true)
Filter collisionFilter = cfgGapSideMerge
? ((aod::udcollision::gapSide == (uint8_t)0 || aod::udcollision::gapSide == (uint8_t)1) &&
(aod::upcservice::truegapside == 0 || aod::upcservice::truegapside == 1))
: ((aod::udcollision::gapSide == (uint8_t)cfgGapSide) &&
Expand Down Expand Up @@ -208,8 +212,9 @@ struct FlowCorrelationsUpc {

float dPhiStar = phi1 - phi2 - charge1 * fbSign * std::asin(0.075 * radius / pt1) + charge2 * fbSign * std::asin(0.075 * radius / pt2);

if (dPhiStar > constants::math::PI)
if (dPhiStar > constants::math::PI) {
dPhiStar = constants::math::TwoPI - dPhiStar;
}
return dPhiStar;
}

Expand Down Expand Up @@ -240,14 +245,18 @@ struct FlowCorrelationsUpc {
int neutronClass = -1;
float energyCommonZNA = collision.energyCommonZNA(), energyCommonZNC = collision.energyCommonZNC();
float timeZNA = collision.timeZNA(), timeZNC = collision.timeZNC();
if (std::isinf(energyCommonZNA))
if (std::isinf(energyCommonZNA)) {
energyCommonZNA = -999;
if (std::isinf(energyCommonZNC))
}
if (std::isinf(energyCommonZNC)) {
energyCommonZNC = -999;
if (std::isinf(timeZNA))
}
if (std::isinf(timeZNA)) {
timeZNA = -999;
if (std::isinf(timeZNC))
}
if (std::isinf(timeZNC)) {
timeZNC = -999;
}
registry.fill(HIST("ZDCEnergy"), energyCommonZNC, energyCommonZNA);
registry.fill(HIST("ZDCTime"), timeZNC, timeZNA);
if (std::abs(timeZNA) > cfgZdcTimeCut && std::abs(timeZNC) > cfgZdcTimeCut) {
Expand Down Expand Up @@ -289,19 +298,19 @@ struct FlowCorrelationsUpc {
if (cfgIfVertex && std::abs(collision.posZ()) > cfgZVtxCut) {
return false;
}
if (!collision.vtxITSTPC()) {
if (cfgvtxITSTPC && !collision.vtxITSTPC()) {
return false;
}

if (!collision.sbp()) {
if (cfgSbp && !collision.sbp()) {
return false;
}

if (!collision.itsROFb()) {
if (cfgItsROFb && !collision.itsROFb()) {
return false;
}

if (!collision.tfb()) {
if (cfgTfb && !collision.tfb()) {
return false;
}

Expand All @@ -310,8 +319,13 @@ struct FlowCorrelationsUpc {
}

if (cfgRctFlagEnabled) {
if (!isGoodRctFlag(collision)) // check RCT flags
if (!isGoodRctFlag(collision)) { // check RCT flags
return false;
}
}

if (!zdcTimeCut(collision)) {
return false;
}

if (!zdcTimeCut(collision)) {
Expand All @@ -322,7 +336,7 @@ struct FlowCorrelationsUpc {
}

template <typename TTrack>
bool trackSelected(TTrack track)
bool trackSelected(const TTrack& track)
{
// registry.fill(HIST("hTrackCount"), 0.5);
auto momentum = std::array<double, 3>{track.px(), track.py(), track.pz()};
Expand Down Expand Up @@ -370,7 +384,7 @@ struct FlowCorrelationsUpc {
if (correctionsLoaded) {
return;
}
if (cfgEfficiency.value.empty() == false) {
if (!cfgEfficiency.value.empty()) {
mEfficiency = ccdb->getForTimeStamp<TH3D>(cfgEfficiency, timestamp);
if (mEfficiency == nullptr) {
LOGF(fatal, "Could not load efficiency histogram for trigger particles from %s", cfgEfficiency.value.c_str());
Expand All @@ -391,28 +405,31 @@ struct FlowCorrelationsUpc {
} else {
eff = 1.0;
}
if (eff <= 0)
if (eff <= 0) {
return false;
}
weight_nue = 1. / eff;
return true;
}
// fill multiple histograms
template <typename TCollision, typename TTracks>
void fillYield(TCollision collision, TTracks tracks, float vtxz) // function to fill the yield and etaphi histograms.
void fillYield(const TCollision& collision, const TTracks& tracks, float vtxz) // function to fill the yield and etaphi histograms.
{
registry.fill(HIST("Nch"), tracks.size());
registry.fill(HIST("zVtx"), collision.posZ());

for (auto const& track1 : tracks) {
if (!trackSelected(track1))
if (!trackSelected(track1)) {
continue;
}
auto momentum = std::array<double, 3>{track1.px(), track1.py(), track1.pz()};
double pt = RecoDecay::pt(momentum);
double phi = RecoDecay::phi(momentum);
double eta = RecoDecay::eta(momentum);
float weff = 1.;
if (!getEfficiencyCorrection(weff, eta, pt, vtxz))
if (!getEfficiencyCorrection(weff, eta, pt, vtxz)) {
continue;
}

registry.fill(HIST("Phi"), phi);
registry.fill(HIST("Eta"), eta);
Expand All @@ -423,7 +440,7 @@ struct FlowCorrelationsUpc {
}

template <typename TTracks>
void fillCorrelations(TTracks tracks1, TTracks tracks2, float posZ, int system, int runnum, float vtxz, float eventWeight, double independent) // function to fill the Output functions (sparse) and the delta eta and delta phi histograms
void fillCorrelations(const TTracks& tracks1, const TTracks& tracks2, float posZ, int system, int runnum, float vtxz, float eventWeight, double independent) // function to fill the Output functions (sparse) and the delta eta and delta phi histograms
{

if (mEfficiency) {
Expand All @@ -439,12 +456,13 @@ struct FlowCorrelationsUpc {
}
}

int fSampleIndex = gRandom->Uniform(0, cfgSampleSize);
const int fSampleIndex = static_cast<int>(gRandom->Uniform(0., cfgSampleSize));

// loop over all tracks
for (auto const& track1 : tracks1) {
if (!trackSelected(track1))
if (!trackSelected(track1)) {
continue;
}

auto momentum1 = std::array<double, 3>{track1.px(), track1.py(), track1.pz()};
double pt1 = RecoDecay::pt(momentum1);
Expand All @@ -458,15 +476,19 @@ struct FlowCorrelationsUpc {
}

for (auto const& track2 : tracks2) {
if (!trackSelected(track2))
if (!trackSelected(track2)) {
continue;
}

if (track1.globalIndex() == track2.globalIndex())
if (track1.globalIndex() == track2.globalIndex()) {
continue;
if (system == SameEvent && cfgUsePtOrder && pt1 <= track2.pt())
}
if (system == SameEvent && cfgUsePtOrder && pt1 <= track2.pt()) {
continue;
if (system == MixedEvent && cfgUsePtOrderInMixEvent && pt1 <= track2.pt())
}
if (system == MixedEvent && cfgUsePtOrderInMixEvent && pt1 <= track2.pt()) {
continue;
}

auto momentum2 = std::array<double, 3>{track2.px(), track2.py(), track2.pz()};
double pt2 = RecoDecay::pt(momentum2);
Expand All @@ -493,15 +515,20 @@ struct FlowCorrelationsUpc {
bool bIsBelow = false;

if (std::abs(dPhiStarLow) < kLimit || std::abs(dPhiStarHigh) < kLimit || dPhiStarLow * dPhiStarHigh < 0) {
for (double rad(cfgRadiusLow); rad < cfgRadiusHigh; rad += 0.01) {
constexpr float kRadiusStep = 0.01f;
const float radiusLow = cfgRadiusLow;
const float radiusHigh = cfgRadiusHigh;
for (int iRadius = 0; radiusLow + static_cast<float>(iRadius) * kRadiusStep < radiusHigh; ++iRadius) {
const float rad = radiusLow + static_cast<float>(iRadius) * kRadiusStep;
double dPhiStar = getDPhiStar(track1, track2, rad, runnum, phi1, phi2);
if (std::abs(dPhiStar) < kLimit) {
bIsBelow = true;
break;
}
}
if (bIsBelow)
if (bIsBelow) {
continue;
}
}
}

Expand All @@ -527,8 +554,9 @@ struct FlowCorrelationsUpc {
auto currentRunNumber = collision.runNumber();
auto runDuration = ccdb->getRunDuration(currentRunNumber);

if (!eventSelected(collision))
if (!eventSelected(collision)) {
return;
}

loadCorrections(runDuration.first);

Expand All @@ -539,8 +567,9 @@ struct FlowCorrelationsUpc {
double nTracksCorrected = 0.;

for (const auto& track : tracks) {
if (!trackSelected(track))
if (!trackSelected(track)) {
continue;
}

auto momentum = std::array<double, 3>{track.px(), track.py(), track.pz()};
double pt = RecoDecay::pt(momentum);
Expand Down Expand Up @@ -593,8 +622,9 @@ struct FlowCorrelationsUpc {
tracks2.size() < cfgMinMult || tracks2.size() > cfgMaxMult) {
continue;
}
if (!eventSelected(collision1) || !eventSelected(collision2))
if (!eventSelected(collision1) || !eventSelected(collision2)) {
continue;
}

auto runDuration1 = ccdb->getRunDuration(collision1.runNumber());
loadCorrections(runDuration1.first);
Expand All @@ -605,8 +635,9 @@ struct FlowCorrelationsUpc {
double nTracksCorrected = 0.;

for (const auto& track : tracks1) {
if (!trackSelected(track))
if (!trackSelected(track)) {
continue;
}

auto momentum = std::array<double, 3>{track.px(), track.py(), track.pz()};
double pt = RecoDecay::pt(momentum);
Expand Down
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